Great Plains Contact Drive Wheel Update Kit - Manual (Page 3)

Great Plains Mfg., Inc.
Installation Instructions 3
12/21/2006 401-465M
Install New Drive Wheel
Refer to Figure 5
1. Loosen the bolt on idler
➀
, and remove the chain
from sprocket
➁
.
Refer to Figure 6
1. Remove the pin
➂
from the inside end of the drive
wheel shaft
➃
. Save the pin.
2. Remove three nuts
➄
attaching the right bearing
flangettes to the contact wheel bracket, and remove
the bearing assembly
➅
. Save all parts.
3. With the assistant supporting the weight of the old
wheel assembly, slide the shaft
➃
completely out.
4. Remove the old wheel assembly. It will be neces-
sary to push it back a bit through the inside bearing
mount hole, and angle the other end clear of the
bracket plates.
Refer to Figure 7
5. Remove the
1 ⁄
2 -20 lug nuts
➆
attaching the old
wheel to the hub
➇
. Save the hub, studs and nuts.
The old rim and tire are not reused.
Note: The wheel rim and hub are not symmetrical. The
stud holes are tapered on the (front) side of the
wheel with the valve stem.
6. Insert the end of the hub
➇
with the stud threads
into the back side of the new wheel assembly.
7. Loosely tighten on a lug nut
➆
, with tapered end
toward hub. Repeat for all four holes.
8. Tighten all lug nuts
➆
to 85 ft-lb (115 N-m).
Refer to Figure 6
9. Have the assistant position the new wheel assem-
bly on the shaft axis. Orient it for easiest access to
the inflation valve.
10. Insert the shaft
➃
through the wheel hub and
through the inside bearing mounting hole.
11. Re-install the inside bearing
➅
.
12. Re-install pin
➂
.
Refer to Figure 5
13. Re-mount chain on sprocket
➁
.
14. Slide idler
➀
into engagement with chain and
tighten so that the longest chain span has
3 ⁄
8 in
slack.
15. Check and adjust tire pressure to 16 psi.
Figure 5
Loosen Outside Idler
25149
➀ ➁
Figure 6
Remove Drive Wheel Shaft
25150
➄
➂
➅➃
Figure 7
Mount Hub on New Wheel
25151
➆
➇